From mboxrd@z Thu Jan 1 00:00:00 1970 From: Patrick Shirkey Subject: Re: status of usb audio driver Date: Thu, 13 Jun 2002 22:35:44 +0900 Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: <3D089FB0.5020604@boosthardware.com> References: <3D06D91D.1080104@boosthardware.com> <3D07564B.4050908@boosthardware.com> <3D0760FC.5060906@boosthardware.com> <3D0772F1.6090009@boosthardware.com> <3D077B61.7030902@boosthardware.com> <3D078560.4030707@boosthardware.com> <3D0895F0.20904@boosthardware.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Errors-To: alsa-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: Takashi Iwai Cc: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org Takashi Iwai wrote: >>This card is supposed to be 24bit/96Khz. In windows it works like this: >> >>4 i/o channels(2 in, 2 out) at 16bit/48Khz or less >>3 i/o channels(2 in, 1 out or 1 in, 2 out) at 24bit/48Khz or less >>1 channel at 24bit/96Khz > > > interesting. i don't find any mono channel on the descriptions. > well, more investigations are necessary. > It is confusing to me also. From reading their docs I thought that the card was all seperate mono channels lsusb has changed my opinion. I now belive that Quattro stands for 2 stereo i/o devices not 4 mono i/o devices. By saying in the docs that it supports 1 channel at 24bit/96Khz I guess they mean 1 stereo in or 1 stereo out. that is good news to me becasue I was under the impression that I had bought a turkey with only one mono i/o channel at 24/96. >>>i've tested usb mic from Labtec, and it works. >>>so the problem is specific to the hardware, or multi-channels... >>> >> >>I just remembered that my mouse is a usb mouse too so that is not >>unexpected. > > > too much bandwidth? > Testing again with the new code didn't lock up my mouse and this time the file actually recorded data although I still cannot capture noise. Do you have any ideas on how I can adjust the input levels internally seeing as the card has no apparent internal mixer? Is this a case of having to write our own mixer device? Does this part of lsusb have anything to do with mixer controls? ---- wChannelConfig 0x0003 Left Front (L) Right Front (R) iChannelNames 0 iTerminal 0 ---- -- Patrick Shirkey - Boost Hardware Ltd. For the discerning hardware connoisseur Http://www.boosthardware.com Http://www.boosthardware.com/LAU/guide/ ======================================== _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas - http://devcon.sprintpcs.com/adp/index.cfm?source=osdntextlink